One of the spongy, sac-like respiratory organs of higher vertebrates

Let's find possible answers to "One of the spongy, sac-like respiratory organs of higher vertebrates" crossword clue. First of all, we will look for a few extra hints for this entry: One of the spongy, sac-like respiratory organs of higher vertebrates. Finally, we will solve this crossword puzzle clue and get the correct word. We have 1 possible solution for this clue in our database.